For all the enjoyment football brings so many, it is a game predicated on one sense above all others: sight.

Sure, the atmosphere in Spartans Stadium this weekend will include the sounds of yelling fans, the smells of propane grills and the taste of cheap, domestic buds. Even the weather will trigger the feeling of sweat.

The game itself, however, needs only working eyes. There is a reason film is usually watched on mute, after all.

There are some things related to the game not seen, or not seen often, though.

Yes, that is the same Thomas as the one drafted in the same year, in the same round, by the same team as former Notre Dame quarterback Brady Quinn. Quinn has not seen NFL action since getting eight starts for the Kansas City Chiefs in 2012, throwing two touchdowns compared to eight interceptions.

Thomas, meanwhile, now blocks for his second former Irish passer while on his way to a likely 11th consecutive Pro Bowl. Note: This is Thomas’ 11th year in the NFL. Not only has he started all 162 games of his career, he has now played in more than 10,000 consecutive offensive snaps.

That’s, uhhh, a lot.

Thursday morning Thomas met with reporters and offered some insights to how he gauges a successful day at the office. (Fair warning: The following embedded video does include one four-letter word. Thomas’ point is quoted and summarized below, so the video may not be necessary to view.)

“You always hear a lot about 4.0 yards per carry, which is sort of everyone’s standard,” Thomas said. “… If you look at rushing in the NFL, you go alright, we went for 1, 2, 3, 4, 1, 2, 60. And then you go, we’re rushing really well, we have a seven-yard average. But really how are you going to get the offensive coordinator to call a run again if he’s getting one and two yards and facing a third-and-seven all the time?”

Well, you’re not.

Thomas prefers “rushing efficiency,” valuing runs of more than four yards, runs gaining first downs and runs finding the end zone. If those make up at least 60 percent of rush attempts, Thomas deems it a success.

“That’s what’s going to allow you to get 20, 25, 30 carries in a game,” he said. “Then you walk out of the game feeling good about getting your 100 yards at the end of the game versus saying you didn’t have four yards a carry, but you were really efficient so you did stay ahead of the sticks, and you were able to keep the offense on the field and be in manageable third downs.”

This space has previously argued the easiest way to learn if a rushing attack is potent or not is to simply note how many running attempts it has. This parallels Thomas’ argument: If the run game is not doing what it needs to do, the coaches will stop calling running plays. The run efficiency percentage is simply a more exact metric, albeit one you cannot see in a glimpse of a box score.

How has Notre Dame fared thus far this season?

Using Thomas’ standards, the Irish had a 61.90 percent rush efficiency in the season opener (42 rushes), a 32.35 percent rating in their one loss (34) and a 66.67 percent tally in last week’s record-setting rushing performance (51).

This method of evaluation may be useful to keep in mind as Notre Dame faces a good, but not great, Michigan State defensive front seven. It would be reasonable to expect that figure to fall somewhere between the Georgia low and the Temple baseline.

815 Gigabytes is, all things considered, not that many.

Lost in all the Campus Crossroads construction, criticism and congratulatory lauding, perhaps the most-needed change has flexed its muscles already this season.

That sounds like a lot of data flying across the Stadium invisible to any eye. But take a look at it from a micro view.

Notre Dame Stadium held 77,622 people two weeks ago. That makes for an average of 10.5 megabytes per person. Let’s set a baseline of a data plan allowing for 5 gigabytes of usage a month. That would equal 0.2 percent of the data granted that plan. Given 30 days in a month, one could be reasonably expected to use up to 3.33 percent of that data on any given day without setting too ambitious of a pace.

Such relatively low usage is a good thing, though. Fans are actually watching the game they are at. It is not the most common occurrence in 2017.

Michigan State opened against two MAC teams. Has Notre Dame ever done that?

Irish coach Brian Kelly did not criticize the Spartans for starting the season against Bowling Green and Western Michigan, but he pointed to it as a reason for their outstanding defensive statistics to date.

“Look, they’ve played two games,” Kelly said Tuesday. “Western Michigan is a really good opponent. It’s harder to judge Bowling Green. … Stats right now, as it relates to Michigan State, are a little early.”

By no means does this thought intend to diminish the Broncos. That is certainly an admirable program, but it should also be acknowledged this is not the same Western Michigan of a year ago. (The Broncos are similar to Temple in that regard. At least someone finally made South Florida look like a top-25 team.)

If wondering has Notre Dame ever started a season with two non-Power Five opponents in a row, that has not been seen in the modern era (since the start of World War II).

If granting a decently-sized caveat of military academies being something of a different scheduling entity, especially considering the Army teams of yore and the fact that the Irish play Navy annually and will continue to do so until the grass is the ceiling and the floor is the sky, then Notre Dame has never faced more than two non-Power Five teams (using the current alignment as the determining factor) in a season.

So many as two have appeared only 15 times in the 79 seasons under consideration, including this year with both Temple and Miami (OH) on the slate.

When Notre Dame got five heralded defensive line recruits on campus together in January, it turned heads. When Irish defensive line coach Mike Elston offered public optimism about the possible 2019 commitments, it raised expectations.

“Honestly, just talking with the guys today — Jacob Lacey, Mazi Smith, Joseph Anderson, Nana Osafo-Mensah, and myself — if Notre Came can land all of us, that would be the dream d-line class for Notre Dame,” Spears told Irish Illustrated. “I could see another pass-rusher or two, also.”

The other three names Spears mentioned all joined Lacey and him on Jan. 27 at an on-campus Junior Day. All five qualify as consensus four-stars, with Smith (East Kentwood; Kentwood, Mich.) a tackle, Anderson (Siegel; Murfreesboro, Tenn.) an end, and Osafo-Mensah (Nolan Catholic; Fort Worth, Texas) a possible end/linebacker hybrid.

From left to right: Osafo-Mensah, Anderson, Elston, Smith, Lacey and Spears. (Twitter: @JacobLacey6)

Landing all five may be ambitious, but it would also be the envy of most of the country.

Spears already held offers from the likes of Alabama and Michigan State, despite missing his junior season with a knee injury. The Irish extended a scholarship offer to him in June, prompting an unofficial visit to watch a 49-14 Notre Dame victory over USC in October. In a video released by 247Sports.com, Spears cited that experience as one of the three primary reasons he committed, along with the educational opportunity and the “overall tradition and culture.”

Spears shows quickness for a defensive lineman, but not such that he would ever be considered an outside linebacker in any form. His size makes him an ideal candidate to set the edge against the run or possibly move inside when the Irish need a quicker defensive line to handle certain opponents. His agility, though, will make him a three-down threat, both a pass-rusher and an edge-setter.

Notre Dame currently has depth at defensive end, but with only one signed in the class of 2018 (Justin Ademilola) and one remaining from the class of 2017 (Kofi Wardlow), an influx will be a priority this recruiting cycle. Spears will theoretically have one season to adjust to collegiate competition before the quartet of rising juniors Daelin Hayes, Khalid Kareem, Julian Okwara and Ade Ogundeji run out of eligibility. (The first three have two seasons remaining, while Ogundeji has the possibility of three more years.)

Hence, that Junior Day emphasis and Elston’s confidence on National Signing Day.

“I’ve been at Notre Dame now going on for nine years, and I haven’t had a stronger group of underclassmen that I’m recruiting than I have this year in 2019,” Elston said. “This could be the best defensive line haul we’ve ever had here.”

Expect to read that quote again and again (and possibly again) if any of the remaining three in the above photo follow Spears’ and Lacey’s lead.

Notre Dame will open spring practice in about two weeks. As always, the proceedings will be filled with positive reviews, optimistic outlooks, and an injury or two.

A quick look at each position group should lend a better understanding to those perspectives and effects, beginning with the group lacking many questions — the running backs. The biggest reason there is relative certainty around the running backs is there are just so few of them following the winter dismissals of rising junior Deon McIntosh and rising sophomore C.J. Holmes.

No one received more praise last spring practice than Tony Jones. He had a successful 2017, but compared to that hype, it could have been considered under-performing. (Photo by Jonathan Daniel/Getty Images)

Depth Chart Possibilities:At some point, either Williams or Jones will be named the Irish starter. It is quite possible that will be a distinction without much difference, as the two could certainly complement each other well in offensive coordinator Chip Long’s system, which already prefers to use multiple running backs.

Human nature, though, dictates is more likely one back receives a majority of the carries.

Biggest Question:If Williams lines up with the No. 1 offensive unit in the Blue-Gold Game (April 21) to conclude spring practice, that will be the first genuine and tangible evidence he has improved as a pass blocker. Despite his big-play speed and seeming-ease breaking tackles, Williams’ one-dimensional game rendered him as much a liability as an asset in 2017.

Even in the Citrus Bowl victory, Williams followed up back-to-back rushes for a combined 36 yards with a blown pass protection resulting in a 13-yard sack.

“You have to be able to protect the quarterback with all positions,” Long said Feb. 7. “That dictates a whole lot if you’re going to play a lot or just be a situational guy. It’s something you have to embrace, the physicality.

“… That’s really the main thing, other than protecting the ball, that’ll keep a back off the field in our offense.”

The best ability is availability, and both an ankle injury and a balky quad limited Williams in that respect in 2017. Little blame can be cast for the natural bruises of football. Nonetheless, he will need to “embrace the physicality” if he wants to become more than a situational back.

Otherwise, Jones will be the default option. He has already shown a knack for both pass blocking and catching, making him a three-down option. Notre Dame will always prefer that rather than tip its hand to a running play every time Williams enters the game.

2017 Statistically Speaking:Obviously, Josh Adams carried the burden in the running game last season. Behind rising senior quarterback Brandon Wimbush and McIntosh, Williams was only the No. 4 rusher on the roster in yards and touchdowns, while Jones was No. 4 in carries and No. 5 in yards and scores.

“Since I’ve been here, if you look at the average rankings, we’re anywhere from 5 to 15,” Kelly said on 2017’s National Signing Day, a day on which Notre Dame secured the No. 13 class in the country, per rivals.com. “We’re going to fall somewhere in that range because there’s a line there we can’t get over based upon what our distinctions are here. That line is going to keep us between 5 and 15.

“We know where we’re going to fall. We’re going to continue to recruit the right kind of kids here.”

Sure enough, the Irish once again fall into that spectrum in 2018, finishing No. 11 per rivals. Though Notre Dame has risen above that range once (No. 3 in 2013) and fallen below it once (No. 20 in 2012) during Kelly’s tenure, his overall analysis remains accurate.

The instinct has always been to cite University academic standards as the greatest hurdle to rising into the top five consistently, but another aspect should not be overlooked. In a recent mailbag, Sports Illustrated’s Andy Staples pondered the factors keeping the Irish from becoming a perennial 10-win team.

“Another major reason is a lack of a local recruiting base,” Staples wrote. “No program has a stronger national reach than Notre Dame, but that still doesn’t make recruiting nationally easy. It’s much easier to have hundreds of quality prospects within driving distances.”

Looking at both this past year’s recruiting rankings and the last nine years of rankings underscores and supports Staples’ point.

Rivals considered 33 prospects to be five-star recruits in 2018. Only seven schools managed to sign multiple such players: Georgia (8), Clemson (6), USC (5), Alabama (3), Ohio State (3), Penn State (2), and Miami (2). To speak more broadly, four schools in the Deep South, two in the Ohio-Pennsylvania corridor and one in California, all talent-rich areas, especially compared to Indiana, Illinois and Michigan.

If combining the total signees of both four- and five-star rankings by rivals, Notre Dame signed 12 such prospects. Only 11 schools signed more, including six of the above seven. (Clemson equaled the Irish haul, though its even split between four- and five-star recruits stands out compared to Notre Dame’s 12 four-stars.) The additional five: Oklahoma, Texas, Florida State, Auburn and Florida. In other words, two schools tapping into Texas, two schools within Florida and one more in the Deep South.

If looking at the last nine years of recruiting, the span of Kelly’s time in South Bend, only eight programs have consistently out-recruited the Irish, all but one mentioned already. LSU finished with the No. 13 recruiting class in 2018, lowering its nine-year average placement to 8.0. The Tigers are one of five SEC teams in that group of eight, joining Florida State, Ohio State and USC.

Sense a theme?

It will always be hard enough for Notre Dame to find high-caliber players likely to succeed at a strong academic institution in the Midwest. That task is even harder knowing how far away those players typically are to start with.

Other programs face a similar challenge, and few handle it as well. Consider the 2018 recruiting classes of Stanford, Michigan and Michigan State, for familiar context.

Stanford finished with 4 four-stars in rivals’ No. 63 class. The Wolverines pulled in 7 four-stars as part of the No. 24 class, while the Spartans signed 5 four-stars in the No. 26 grouping.

The Blue-Chip RatioFinishing within Kelly’s range has not stopped Notre Dame from consistently having one of the most-talented rosters in the country. If abiding by rivals rankings for consistency, 45 of the 89 players currently on the Irish roster (including incoming freshmen) were four- or five-star recruits.

A commonly-cited metric of a roster’s talent is the so-called “Blue-Chip Ratio.” Essentially, a national championship caliber team will have at least 50 percent of its roster consisting of former four- or five-star prospects. Entering 2017, Notre Dame was one of only 10 such teams in the country.

As should be expected, the other nine included six programs from the Deep South, Ohio State, USC and, as an ode to Jim Harbaugh’s early recruiting successes, Michigan.

A Presidents Day ReminderNotre Dame cannot officially claim any POTUS as an alum, but both Josiah Bartlet and James Marshall would like to argue otherwise.

Notre Dame used the first early signing period to its advantage, but in many respects, succeeding in that initial foray was by default. The Irish already had strong relationships with the recruiting class of 2018 when the NCAA finally agreed upon setting a 72-hour window for December. No other recruiting changes went into effect in the cycle, so the only shift was getting the paperwork ready and the grades verified six weeks earlier than usual.

“When you are presented with a new rule that gives you — go ahead, sign them early — and you’ve done all that work, that’s kind of a lay-up,” Notre Dame head coach Brian Kelly said on National Signing Day, Feb. 7. “The real work now begins with the early visits.”

A bit before finally nailing down the December early signing period, the NCAA also approved official visits for high school juniors in April, May and June. Previously, a recruit could not take an official visit until September of his senior year in high school.

For a program with a national reach in recruiting — pulling in multiple prospects from both coasts in the cycle of 2018, for example — it can be difficult to get a player to visit for a home game amidst his own football season. When it is possible, it is often a rushed trip. The recruit plays a high school game Friday night, flies to South Bend, possibly via Chicago, early Saturday morning and then departs mid-day Sunday to get back home in time for the school week.

Notre Dame can now instead slate that official visit for the summer, perhaps around a camp environment or the Blue-Gold Game (April 21).

In years to come, this expedited timing could have a greater effect on recruiting than the early signing period does.

“How we handle the back end of it, the back end being when are those visits going to start, when do you start them, when do you end them,” Kelly said, “That’s really what we’re trying to figure out at this point relative to tweaking and how that’s going to work.”

Theoretically, earlier visits could lead to earlier commitments, increasing the likelihood of more signings in December than in February, further de-emphasizing the traditional National Signing Day.

Amid all those changes, though, recruits are still allowed only five official visits and only one to each school. Of course, a recruit can make multiple unofficial visits, paying for those out of his and his family’s own pocket, but Notre Dame can pay for only one. As much as getting a recruit on campus earlier in the process should bode well for any program, it becomes a double-edged sword: Is it better to get a player on campus early and make that impression before other schools have the opportunity, or is it better to showcase a primetime game against a rival?

Irish recruiting coordinator Brian Polian suggested allowing two official visits per school, although remaining at only five total, on National Signing Day.

“Why not let a young man make two official visits to one institution? Because if somebody says to us, from far distance, I want to come make a visit to your place in the spring, well, ideally you want them to see a game atmosphere, as well,” Polian said. “There’s nothing like Notre Dame Stadium and this campus on a game weekend.

“Now we’re going to have to get into some strategic decisions about when do we want young men to take visits.”

Perhaps in time the NCAA will consider that adjustment, but it will not be for the cycle of 2019.

While when a player visits may impact the recruitment, Polian does not much care about when they commit, as long as they do. Notre Dame signed five prospects on National Signing Day who had not previously committed publicly, making it appear to be a strong finish to the class. Then again, the Irish also signed 21 players in the early signing period and received a 22nd commitment less than a week afterward.

“If you’ve got a really good class and they’ve been committed for a while, who cares when they said yes?” Polian said. “It’s as though the answers that you get at the end dictate your class.”